Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Sed posuere consectetur est at lobortis. Vestibulum id ligula porta felis euismod semper. Donec ullamcorper nulla non metus auctor fringilla. Aenean lacinia bibendum nulla sed consectetur. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Cras mattis consectetur purus sit amet fermentum. Morbi leo risus, porta ac consectetur ac, vestibulum at eros. Sed posuere consectetur est at lobortis. Etiam porta sem malesuada magna mollis euismod. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum. Curabitur blandit tempus porttitor. Sed posuere consectetur est at lobortis.
No; however, if there is a Virus on your computer, then you will back that up so, even when your re-format, it will be pointless because you will re-store the Virus.
Even if your system is damaged by viruses, you should at least scan the files you need to backup. Scan the new CD/DVD again, to be sure it's "clean". Your new disk should not be infected. I've never heard of viruses that infect files while burning a CD.
Dear tanmx please keep all your posts together. This question is the same as your others about reformatting. You do not to make a new thread just add it to your others.